According to popular lore, the book is named after , a disciple or associate of the sage Garga Rishi (Gargacharya), a prominent figure in the Mahabharata and Puranic traditions. The text is said to be a dialogue or a record of knowledge imparted to her, dealing with the occult sciences.
: Some stories suggest it was originated by a woman named Nilavanti, rumored to be a Yakshini (a class of nature spirits) with magical abilities. nilavanti granth pdf
True "original" manuscripts of the occult version are extremely rare or non-existent in the public domain. Most online PDFs are: Nilavanti Granth Summary - sciphilconf.berkeley.edu According to popular lore, the book is named